| Starter | Tm | Tier | Game |
|---|---|---|---|
| Greg Maddux | ATL | 11.82 | 199809180_ATL_ARI |
| Pedro Martinez | BOS | 5.05 | 199809190_BOS_CHA |
| Curt Schilling | PHI | 2.89 | 199809190_WAS_PHI |
| Omar Daal | ARI | 2.33 | 199809170_ATL_ARI |
| Randy Johnson | HOU | 2.08 | 199809180_HOU_PIT |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pedro Astacio | COL | -6.43 | 199809180_COL_SDN |
| Mike Oquist | OAK | -4.9 | 199809180_OAK_TEX |
| Ken Cloude | SEA | -4.56 | 199809180_SEA_ANA |
| John Burkett | TEX | -4.35 | 199809180_OAK_TEX |
| Frank Castillo | DET | -3.99 | 199809190_MIN_DET |
Based on accumulated WAA for this season up to 1998-09-19.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +001+ | 12.71 | Greg Maddux | 245 | ATL |
| +004+ | 11.15 | Kevin Brown | 243 | SDN |
| +007+ | 10.14 | Tom Glavine | 224.3 | ATL |
| +009+ | 9.23 | Roger Clemens | 218.7 | TOR |
| +010+ | 9.01 | Pedro Martinez | 227.3 | BOS |
| +013+ | 7.92 | Al Leiter | 179.7 | NYN |
| +022+ | 7.07 | Kenny Rogers | 224.7 | OAK |
| +023+ | 7.02 | Curt Schilling | 260.7 | PHI |
| +026+ | 6.51 | Omar Daal | 156.7 | ARI |
| +027+ | 6.43 | Dustin Hermanson | 177.7 | WAS |
| +028+ | 6.12 | Randy Johnson | 237.3 | TOT |
| +032+ | 5.89 | Brian Bohanon | 142.7 | TOT |
| +034+ | 5.88 | Francisco Cordova | 214.3 | PIT |
| +039+ | 5.6 | John Smoltz | 162.7 | ATL |
| +040+ | 5.57 | Mike Mussina | 194.3 | BAL |
| +043+ | 5.5 | Pete Harnisch | 196 | CIN |
| +044+ | 5.49 | Andy Ashby | 220.7 | SDN |
| +046+ | 5.39 | Jamie Moyer | 228.3 | SEA |
| +056+ | 5.07 | Chuck Finley | 217 | ANA |
| +061+ | 4.87 | Rick Reed | 207.3 | NYN |
| +065+ | 4.68 | Mike Hampton | 200.7 | HOU |
| +069+ | 4.52 | David Wells | 209.3 | NYA |
| +073+ | 4.27 | Denny Neagle | 208.3 | ATL |
| +075+ | 4.19 | Rolando Arrojo | 200.7 | TBA |
| +076+ | 4.17 | Matt Morris | 100.7 | SLN |
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